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Cystic duct

The cystic duct connects the neck of the gallbladder to the common hepatic duct (CHD). The junction of the cystic duct and the common hepatic duct forms the common bile duct. The cystic duct is approximately 2-3cm long and 2-3mm in diameter. 

The cystic artery (branch of right hepatic artery) can often travel behind the cystic duct to supply the gallbladder. 

Variant anatomy

There are three main variations of the cystic duct 3:

  • low cystic duct insertion - into the distal-third of the CHD (~10%)
  • medial cystic duct insertion - into the left, not the right, side of the CHD (~15%)
  • parallel cystic duct course - courses parallel to the CHD for at least 2cm (~10%)

Related pathology

Conditions that may affect the cystic duct include:

Related articles

Abdominal and pelvic anatomy

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